Pulverizing attachment for plows



Feb. 5, 1924.' 1,482,828

s. WATSON PULVERIZING ATTACHMENT FOR PL OWS Filed April 8. 1922 PatentedFeb. 5, M24.

STATE STROTHER WATSON, 0F GALLATIN, TENNESSEE.

PU LVERIZING ATTACHMENT FOB FLOWS.

Application filed April 8, 1922. Serial No. 550,629.

To all whom it may concern:

Be it known that I, S'rnorrrnn l VATsoN, a citizen of the United States,residing at Gallatin, in the county of Sumner and State of Tennessee,have invented a new and useful Pulverizing Attachment for Plows, ofwhich the following is a specification.

This invention relates to mold boards for plows and more particularly topulverizing attachments therefor.

The object of the invention is to equip a mold board with pulverizingknives so co-n structed and set as to render it impossible to choke theplow or prevent its scouring, and which will divide the furrough sliceinto any requisite number of strips sufiiciently small to disintegrateor crumble as they turn over.

Another object is to so construct and.

mount knives of this character that they will efi'ectively break up andpulverize sod, hard cloddy land, clay and gravel without choking andwithout causing excessive draft.

Another object is to provide such knives constructed so as to preventthe formation of a dead space at the rear and which are located wherepressure is exerted on all plows thereby preventing the mold boardwearing through at this point and which will not in any way interferewith the proper operation of the plow share.

With the foregoing and other objects in View which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 represents aside elevation of amold board and share with this improver ment shown applied.

Fig. 2 is a detail longitudinal section thereof.

Fig. 3 is a detail side elevation of one of the cutting blades.

In the embodiment illustrated, a mold board 1 is shown of usualconstruction provided at its front end with a plurality oflongitudinally extending laterally spaced parallel slots 2. A share 3 ofordinary construction is shown provided on itslower'face at its innerend with a plurality of longitudinally extending laterally spacedgrooves 42 opening through its inner edge and which are positioned toregister with the slots 2 in the mold board when the members arethinsheet of steel and each comprises a sub:

stantially triangular body portion 6, the edge 7 of which is designed tobe arranged on the inner face of the mold board 1 flush therewithwhile'the edge 8 extends toward the front of the board with a point 9projecting beyond said board. The rear edge 10 of the blade 6 isprovided with a projection 11, the lower edge 12 of which isspaced fromthe edge 7v a distance equal to the thickness of the mold boardl so thatwhen the blade is applied, the projection '12 will rest on the outerface of said board as is shownclearly in Fig. 2. An'extension 13 extendsrearwardly in alinement from edge 8 and sharpened on its outer edge 14to form a cutter which extends from the outer face of the mold board 1at an angle of about more or less. The extension 13 may be of anydesired length according to the length of-the blade it is desired to useand the blade body together with the extension 13 being made of thinsheet steel will occupy a minimum amount of space when applied andprevent the formation of a dead space at the rear of the cutter such aswould he likely to prevent scouring of the mold board.

In the use of this device, the blades 5 are removably connected with aplow by inserting them in the slots 2 of the mold board 1 with theprojections 11 thereof resting on the outer face of the mold board andwith the points 9 projecting beyond the front end of said mold board.The point carrying share 3 is then placed over the blade points 9 withsaid points extending into the grooves 4 so that these points arecompletely housed in said grooves and the end walls of the grooves forman abutment for the points of the blades and force them back intoclamping engagement with the mold board board, and a plow point carryinwhereby the blades are securely held in operative position without theuse of any fastening elements.

It will thus be seen that the blades 5 may be quickly removed andreplaced by simply detaching the share, lifting out the blades,inserting others, and returning the share, or if desired, the share maybe returned without replacing the blades.

The location of the blades at the lower edge of the mold boardavoidsexcessive draft such as would be occasioned were they attached to theshare.

l. The combination of amold board having longitudinally extending slotsat its front end, knives to fit in said slots with their front endsprojecting .beyondthe g share having grooves on its lower face openingthrough its inner edge to fit over said projecting blade ends to holdthe blades in operative position.

2. The co'mbination with a mold board, and a plow share of a pluralityof pulverizing blades, said board, share and blades having cooperatingmeans whereby the blades are held inoperative position without the useof-fasteners. I

The combination of a mold boa-rd having longitudinally extending slotsopening through its front end, a plurality of blades removabl-y mountedin said slots, with their cutting edges arranged obliquely relatively tothe board, and having pointed front ends projecting beyond the moldboard, a share having grooves in its-lower ace opening through its rearend and positioned to register with the slots in-the mold board and de-'signed to fit over the projecting blade ends to hold the blade inadjusted position.

4:. The combination of a mold board having longitudinally extendingslots opening through its; front end, a plurality ofblades removablymounted in said slots, said blades being substantially triangular inform with an extension at one corner arranged in longitudinal alinementwith one side edge thereof, the outer edge of said extension and theside edge with which it alines being sharpened to form a continuouscutter, the edge of the blade which extends at right angles to theextension having a projection to fit over the outer face of the moldboard to hold the I blade in position relative to the board.

5. The combination of a mold board having longitudinally extending slotsopening through its front end, a plurality of blades removably mountedin said slots, said blades being substantially triangular in form withan extension at one corner arranged in longitudinal alinenient with oneside edge thereof, the outer edge of said extension and the side edgewith which it alines being sharpened to form a continuous cutter-,- theedge of the blade which extends at right angles to the extension havinga projection to fit over the outer face of the mold boa-rd to hold theblade in position relative to the board,- the edge of the blade bodybetween said projection and the lower body edge being of a lengthcorresponding to the thickness of the mold board.

6. The combination of a mold boa-rd having slots in the front endthereof, .a pulverizing blade for mounting in one of said slots andcomprising a thin sheet steel plate hav ing an obliquely disposedcutting edge, said blade having means for engagement with said moldboard whereby said cutting edge is held substantially at an angle of anda plow share having means for clamping and holding said blade engagedwith the mold board.

In testimony that I claim the foregoing as my own, I have hereto affiXedmy signature in the presence of two witnesses.

S'IROTHFil-I 'WAISON. Witnesses B. E. RrPrY, J. J. WARREN.

